SOLUTION: Determine amt. from a 1 in. rainfall on a sq. mi. of land. A sq. mi. = 27878400 sq. ft. An inch = 0.083333 ft. A gal. of water weighs 8.34 lbs. Not sure how to proceed

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: Determine amt. from a 1 in. rainfall on a sq. mi. of land. A sq. mi. = 27878400 sq. ft. An inch = 0.083333 ft. A gal. of water weighs 8.34 lbs. Not sure how to proceed      Log On

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Question 1082910: Determine amt. from a 1 in. rainfall on a sq. mi. of land.
A sq. mi. = 27878400 sq. ft.
An inch = 0.083333 ft.
A gal. of water weighs 8.34 lbs.
Not sure how to proceed. Non-homework. Thanks.

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Calculate the volume of water in cubic feet using the area and depth of rainfall.
Convert cubic feet to cubic inches.
Convert to gallons using the conversion factor.
Convert to weight using the density of water.
V=A%2Ad
V=27878400%280.083333%29
V=2323199ft%5E3
V=2323199%2A12%2A12%2A12
V=4014487994in%5E3
There are 231 cubic inches in a gallon so divide the number of cubic inches by 231 to get the number of gallons.
V=4014487994%2F231
V=17378735.9gallons
Finally multiply by the weight per gallon to get the total weight of the rainfall,
W=17378735.9%2A8.34
W=144938657lbs